| 摘要 |
PURPOSE:To prevent quenching due to frictional heat and quenching due to internally produced heat by forming part of a resin layer constituting a surface layer of a superconducting coil body thicker than other portions, said part making contact with a fixing tool directly or indirectly. CONSTITUTION:Part 33a of a resin layer 33 constituting a surface layer part of a superconducting coil body 13 is formed thicker than another part 33b, said part making contact with a fixing tool 14 directly or indirectly. Accordingly, with this part heat resistance can be increased and heat can be diffused over a wide region. Hereby, temperature rise of a superconducting wire is restricted. Further, in said another part 33b the thickness of the resin layer can satisfactorily be made thin. Thus, the another part contributes to rapid transmission of internally produced heat to a refrigerant fluid. Hereby, there can simultaneously be prevented quenching due to frictional heat produced at an interface between the fixing tool 14 and the superconducting coil body 13 and quenching due to the internally produced heat from being produced. |
